Conveyer



E. F. SEIBEL May 10, 1938.

CONVEYE R 2 Sheets-Sheet Original Filed Feb. 20, 1934 INVENTOR. /meffez'/ Will/lll' ATTORNEY.

May 10, `1938. E. F. SEIBI-:L`

CONVEYER Original Filed Feb, 20, `1954` 2 Sheets-Sheet 2 INVENTQR. 7722er E15 efe 6 M wwf ATTORNEY.

ria-mad May 1 0, 193e i o I2,116,800

UNITED STATES PATENT OFFICE F. Seibel, Erie, Pa., assignor, by mesne asslgnments, to The Standard Stoker Company,

, (1922), New York, N. Y., a corporation of ware I Application February 20, 1934, Serial No. 712,099 f Renewed October 21, 1937 4 Claims. (Cl. 198-15) This invention, which relates to a conveying In the Standard Type B locomotive stoker, system and especially to thefuel conveying sysfor which my invention has been particularly tem of stokers, has for its principal object the devised, the conduit which is disposedv on the improvement of a stoker conduit by constructlocomotive terminates in an angular member or ing the same in a plurality of separable sections elbow adapted to turn or direct the fuel upwardly 5` to the end that worn or defective sections may as it is conveyed forwardly by the conveyer screw. be conveniently renewed.` i The forward end of this conveyer screw is dis- A more specific object of` this invention resides posed at a predetermined position in the elbow in the provision of an improved stokerA conduit and cooperates with the walls Hof the elbow and 1u of elbow formation comprising an upturned secthe conduit thereabove to force the fuel upwardly 10 tion and a vertically split horizontal portion into a point of distribution. From actual `expericluding a pair of intertted sections each secured ence, it has been found that whenl fuel is `ele' to said upturned section. vated in this manner, the conveyer screwbears It is a further object ofthis invention to proagainst one upper side portion of the elbow convide in a conveyer conduit having a conveyer duit, dependent upon the direction of rotation of 15 screw rotatablymounted therein, a detachable the screw. Thus, when viewed in the direction conduit element intermediate the ends of the conof fuel ow, if the conveyer screw turns counterveyer conduit and embracingthe conveyer screw, clockwise, it will bear against the upper left side said conduit element including a plurality of of the conduit, and vice versa. u

interiltted sections, each `of which is rigidly but This condition causes excessive wear of the el- 2 detachably I- secured at its opposite ends toadbow conduit at the above described portion jacent portions ofthe conveyer conduit, the` inthereof, and hence frequent replacements of the terfittingsections being so constructed that any elbow must be made. Since the elbow of the section may be easily removed without disturb- Stoker extends from beneathv the iirebox to a ing other parts of the conveyer conduit and withpoint exterior thereof and is otherwise associated 25 out removing the conveyer .screw from its position with parts of the stoker and locomotive in intiin the conduit. C i mate structural relation, its replacement is very In carrying out this last object, the detachable difficult and removes the locomotive from service conduit element is split vertically Intoa `pair of for several days When SliChVrePairS are being sections, one section having a key and groove made. `With the use of thepresent construcarrangement opening upwardly and the other tion,` this troublesome condition is obviated by section having a complementary key and groove an arrangement whereby theworn portion of the arrangement opening downwardly; the key of elbow may be easily removed within a few hours, one section engaging the groove of the other and accordingly this forms a still further object section, such engagement of the grooves being 0f this invention. i 35 accomplished without removing the screw from Referring nowto the preferred `form, of my the (gemunt invention as illustrated in Figures 1 to 5 inclusive,

To those familiar with conveyer systems, other the locomotive is shown at I0 and includes frames objects and advantages whichuarevinherentin my such ,as` II above which is mounted the boiler I2 construction will become apparent as the i'ollowhaving a rebox I3. The boiler I2 includes a 40 ing specification is 'read in connection with, the hollow water leg I 4 forming the backwall of the accompanying drawings, in which, flrebox and a mudring` I5 which serves as a foun- Figure 1 is a centralvertical longltudinalsecdation for the freboxand` also as a support for tion of a portion of a locomotive,showing the inthe grates I6. Anexpansionplate Il is secured vention in position thereon; at one end to the frameII and at its opposite 45 Figure 2 is a sectional view taken on the line endto Vthe mudring I5, forming a `flexible sup- 2--2 of Figure 3; port for the rearward portion of the boiler.

Figure 3 is a sectional view taken on the line The stoker in which my invention is embodied 3--3 of Figure 2; u i comprises a horizontal conduit I8 at one end rig- Figure 4 is an isometric view of the improved idly secured `to the vframe II as at I 9 and also 50 elbow with one section thereof removed; flexibly connected as atZIl to a tubular conduit Figure 5 is an isometric view of the elbow sec- 2| which leads forwardly `from a source of fuel tion removed in Figure 4, and Supply on the tender (not shown). At its oppo- Flgure 6 is a view similar to Figure 3 showing site end, the horizontal conduit I 8 is ilanged as a modicationof the invention.l shown at Ila and terminatesrearward of and 55 below the mudring I5. An elbow conduit, generally indicated by E is attached to the horizontal conduit I3, in a manner which will be fully described, and extends beneath the mudring I and the flrebox I3. The forward portion of theelbow`conduit E opens upwardly and is provided with a counter-bored portion 23 forming a seat y emerges ,from the mouth 21 of the core tube, it

is scattered over the grates' I6 by blasts of pressure uid discharged through the orifices 28 of the jet head 29. f

The stoker construction described thus far is of conventional form and will be recognized by those familiar with the art as the well known Standard Type B locomotivestoker. My present invention is chiefly concerned with the structural formation of the elbow conduit E and its relation with associated parts of the locomotive and .stoken and this construction will now be described with more particularity.

This elbow conduit includes the upturned curved section 30 and the vertically split conduit 3I comprising sections 32 and 33. rlFoot members 34 are formed with the curved section 33 and these are bolted securely to a bracket 33 carried by the locomotive frame Il.

The longitudinal ends of each section 32 and 33 are provided with lateral flanges such vas 32a, 32h and 33a, 33h, respectively, while the forward end of the conduit I3 and the horizontally opened rearward end of the curved section 3U are also flanged as at I8a and y 30a, respectively. As clearly shown in the drawings, the flanged ends of the vertically split conduit 3| flt ush against the corresponding flanges of the conduit I3 and the curved section 30, respectively, and bolts l such as 36 securely connect these flanges.

With the flights 31 of the conveyer screw 26 wound in the direction shown, the screw bears against the upper portion 38 of the section 32 when fuel is being elevated through the conduit 24. 'Ihis lcauses a lateral and rearward thrust on the section 32 and in order that this thrust will not cause a separation of the sections 32 andv 33, and also so that the entire thrust load may not be imposed on the bolts 33 on the one side of the conduits 33, I8, the sections 32, 33 are interiitted in a novel manner.

Since the section 33 will be less frequently replaced than section 32, this first namedfsection is provided with anfupwardly directed key 39 and groove 40, there being two of such key and groove arrangements, one at the upper free end and another at the lower free end of the section 33. The corresponding free ends of the section 32 varev therefore provided with downwardly directed keys 4I and grooves 32. Preferably, the keys'and grooves are machined to a close tolerance so tha-t the joint between the sections 32, 33 will be firm and onewhich forms a centering or mastering means between these sections. In Figure 6 I have shown a modification of this feature of my invention wherein the intertting keys and grooves 43, 44, 45 and 46 of the sections 32, 33 respectively are not machined but cast to the required configuration and then dressed with an emery wheel to size. This type of key and groove arrangement can be used with equal success providing that a close iit'between the lnteriitted elements of each section is maintained. By the 'use of a jig or otherl flxturefit is practical to grind these cast keys and grooves to accurate dimensions.

It will be observed from Figure 3 that the outer diameter of the conveyer screw 26 is somewhat less than the inner diameter oi' the conduit 3l, and also that this difference in dimensions is greater than the depth of engagement between the keys and grooves of the sections 32 and 33. Thus, whenever the section 32 has been worn excessively, the bolts which hold this section to the curved section 30 and the conduit I 3 are removed and then the stoker mechanic lifts the section 32 upwardly, disengaging this section from the section 33, which is still in its normal position. The conveyer screw 26 permits of such upward movement because it is also capable of upward movement. Likewise, when-applying a new section 32, the mechanic places the lower edge of the section against the bottom of the screw flight 31, and lifts the section and screw whereby the key of one section will engage the groove of the other section. By the use of the machined key and groove arrangement the bolt holes 36a of the various flanges will always be in alignment, thereby enabling the mechanic to insert the bolts 36 with considerable ease.

I have found that the life of the renewable sections 32, 33 is increased materially by chilling their respective upper portions 33 and 41. Care should be taken, however, that the chilled portion does not extend too close to the machined key and groove arrangement because this would result in tool breakage during the machining operation. In thejactual construction of this device the edge 43 ofthe upper groove 42 which is formed in the section 32isnot machined and this groove is slightly wider than the width of.

the engaging 4key 33 of section 33. 'I'his has been found necessary because of the diiiiculty in controlling the extent of the chill.

Although my invention has been described in connection with' but one type of stoker, it ls obvious that the4 features of novelty which I have devised are capable of use with other forms of stokers as well as with conveyers in general. It wilialso be apparent that by my construction, the more or less permanently mounted conduits I 3 and 36am not disturbed when either of the sections 32 or 331s renewed, and that the conveyer screw 26 which is embraced by these sections may also be maintained in its position when such repairs are being made.

I claim:

1. In combination with a locomotive having a frame and a firebox above said frame, said firebox having a rear wall provided with a foundation ring, a Stoker including a. conduit at one end receiving fuel from a source of supply and at its opposite end delivering the fuel into the firebox, a conveyer screw rotatably mounted in said conduit, said conduit having a detachable por-v tion intermediate itsvends between the foundation ring and the frame split into a pair of sections, said detachable portion embracing atleast a portion of the conveyer screw and having internal dimensions greater than the diameter of the. conveyer screw embraced by said detachable portion, a key and groove arrangement in each of said sections, the key and groove of one section being interiitted respectively with a groove and key of the other section, the depth of the key and groove engagement being no greater than the difference between the internal dimensions of the detachable portion andthe diameter of the conveyer screw therein, and means for securing said sections to said conduit.

2. In combination with a locomotive having a frame and a rebox above said frame, said rebox having a rear wall provided with a foundation ring, a Stoker including a conduit at one end receiving fuel from a source of supply and at its opposite end delivering the fuel into the flrebox, a conveyer screw rotatably mounted in said conduit, said conduit having a detachable portion intermediate its ends between the foundation ring and the frame split into a pair of sections, said detachable portion embracing at least a portion of the conveyer screw and having internal dimensions greater than the diameter of that portion of the conveyer screw embraced by said detachable portion, a key and groove `arrangement formed at the free edges of each section and extending longitudinally of said detachable portion, the grooves of one section opening in `one direction and the grooves of the other section opening in the opposite direction, the keys and grooves of one section being intertted with the r2spective grooves and keys of the other section, the depth of the key and groove engagement being no greater than the difference between the internal dimensions of the detachable portion and the diameter of the i corveyer screw therein, and means for securing said sections to said conduit.

3. In combination with a locomotive having a frame and a boiler rebox above said frame, said rebox having a rear wall provided with a foundation ring, a Stoker including a conduit rigidly secured to said frame, said conduit terminating adjacent the rebox and at its end remote from the irebox arranged to receive fuel from a source of supply, an elbow conduit at the terminal end of the conduit, said elbow conduit including `an upturned curved portion directed toward the rebox and a `detachable portion between the foun dation ring and the frame split into a pair of sections, said upturned portion rigidly secured to said frame, a conveyer screw rotatably mounted in said conduit and having at least a portion thereof extending freely within said detachable l portion, a key and groove arrangement formed at the free edges of each section and extending longitudinally of said detachable portion, the grooves of one section opening in onedirection and the grooves of theother section opening in tion ring, a stoker including a conduit rigidly secured to said frame, said conduit terminating adthe iirebox arranged to receive fuel from a source of supply, an elbow conduit at the terminal end of the conduit, said elbow conduit including an upturned curved portion directed toward the lirebox and a detachable portion between the foundation ring and the frame split vertically into a pairof semi-cylindrical sections, said upturned portion being rigidly secured to said frame, a conveyer screw rotatably mounted in said conduit and having at least a portion thereof extending freely within said detachable portion, the longi-V tudinal meeting faces of said sections being provided with interengageable tongues and grooves, and means for securing each of said sections to said conduit and said upturned curved portion.

ELMER F. SEIBEL.

`jacent the iirebox and at its endrernote from 

